Cut the cod into 2x2-inch pieces; place in non-stick skillet.,Barely cover with water; sprinkle salt and paprika over fish and bring to a quick boil.,______,Drain out hot liquid and cover with cold water, add vinegar bring to quick boil again.,Again reduce it to a low simmer and let cook uncovered about 10 minutes.,Drain and serve immediately with drawn butter and fresh lemon juice.